Acetylcholine receptor (AChR) binding antibodies with reflex to AChR modulating antibody-994
Test info
Acetylcholine receptor (AChR) binding antibodies with reflex to AChR modulating antibody
994
LAB994
MSO
- AChR-binding antibody
- AChR-modulating antibody (if appropriate)
- Diagnose myasthenia gravis (MG)
- Monitor response to treatment of myasthenia gravis
Specimen
Serum
1.5 mL
0.6 mL
Note: This volume does not allow for repeat testing.
Note: This volume does not allow for repeat testing.
Spin
Gold serum separator (SST) tube
Spin within 45 minutes of specimencollection and transfer separated serum to a Transfer vial/tube with cap - 12mL (LabCorp)
Ambient (preferred) - 7 days
Refrigerated - 14 days
Frozen - 2 months
- Inadequate labeling
- Gross microbial contamination
- Specimen contaminated with anticoagulants
- Chylous serum
- Plasma specimens
Performance
LabCorp Burlington (086003): R-NX
Mo - Fr
6 - 10 days
AChR-binding assay: Radioimmunoassay (RIA)
AChR-modulating antibody: Cell culture based radioimmunoassay (RIA)
Clinical and Interpretive info
AChR-binding antibody
Negative: 0.00 - 0.24 nmol/L
An AChR-binding antibody result <0.25 will reflex to the AChR-modulating antibody at an additional charge.
AChR Modulating Ab (if appropriate)
Negative: < 21%
Billing
83519 - AChR binding Ab
83519 - AChR modulating Ab (if appropriate)
83519 - AChR modulating Ab (if appropriate)
Result 11034-6
Tracking
10/01/2019
01/27/2020
06/03/2020